[Biofilms] Can you tell me...?

Hello, I wonder if you might be able to answer a question for me...
I saw your information on bio-film and wondered if that is what I see
as an oily pale green haze on my pond at this time of the year...we have
always said that it seems to be from the pollens in the air landing on
the surface, the water seems no less clean and non-smelly...do you know
what it likely is? it happens most in the spring but seems only evident
in the evenings (but, that could just be because of the lighting...)...I
think the pond is still safe to swim in, we live in the country on
Vancouver Island where most of the waters are quite pristine, what do
you think?
thank you very much for your time, anita
--
Paul & Anita
Iguana Ranch Guesthouse
The Mountain Bikers Shangrila
Biking, hiking, tubing, cheap sleeps, good eats, great vibe!
Duncan, BC (250)709-9010
www.iguanaranch.com